EP 0177800 A3 19881005 - BIREFRINGENT OPTICAL WAVELENGTH MULTIPLEXER/DEMULTIPLEXER
Title (en)
BIREFRINGENT OPTICAL WAVELENGTH MULTIPLEXER/DEMULTIPLEXER
Publication
Application
Priority
US 65001284 A 19840913
Abstract (en)
[origin: US4566761A] An optical multiplexer/demultiplexer provides for arbitrarily closely spaced wavelength channels, the spacing and locations thereof being determined by the thickness of birefringent crystals such as, for example, quartz. Such a device can also be used for duplexing bidirectional signals. Methods for mechanically tuning the devices to given laser wavelengths are described, as well as simplified constructions which can be used with polarized light sources such as lasers.
IPC 1-7
IPC 8 full level
G02B 6/293 (2006.01); G02B 6/10 (2006.01); G02B 6/28 (2006.01); G02B 6/34 (2006.01); G02B 27/28 (2006.01)
CPC (source: EP US)
G02B 6/105 (2013.01 - EP US); G02B 6/2817 (2013.01 - EP US); G02B 6/29302 (2013.01 - EP US); G02B 27/283 (2013.01 - EP US); G02B 27/288 (2013.01 - EP US); G02B 6/272 (2013.01 - EP US); G02B 6/2766 (2013.01 - EP US); G02B 6/2773 (2013.01 - EP US)
Citation (search report)
- [Y] GB 2076994 A 19811209 - WESTERN ELECTRIC CO
- [A] GB 2106665 A 19830413 - SPECTRON DEVELOPMENTS LIMITED
- [A] US 4129357 A 19781212 - FROSCH ROBERT A ADMINISTRATOR, et al
- [A] GB 2105864 A 19830330 - SPECTRON DEVELOPMENTS LIMITED [GB]
- [X] PATENT ABSTRACTS OF JAPAN, vol. 7, no. 130 (P-202)[1275], 7th June 1983; & JP-A-58 48 018 (MITSUBISHI DENKI K.K.) 19-03-1983
Designated contracting state (EPC)
BE DE IT
DOCDB simple family (publication)
US 4566761 A 19860128; CA 1255135 A 19890606; EP 0177800 A2 19860416; EP 0177800 A3 19881005; JP S6173919 A 19860416
DOCDB simple family (application)
US 65001284 A 19840913; CA 489867 A 19850903; EP 85111612 A 19850913; JP 20071485 A 19850912